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--- tools:antisaccade:eeg [2025/04/30 16:31] – will
+++ tools:antisaccade:eeg [2026/08/06 15:40] (current) – [Degree Visual Angle/Distance Measurements] will
@@ Line 5: / Line 5: @@
 The source is [[https://github.com/LabNeuroCogDevel/mgs_encode_memory.py/blob/master/vgs_anti.py|vgs_ant.py]] ([[:tools:psychopy]]) part of [[:tools:mgs|Memory Guided Saccade (MGS) Task]], same interface can also run [[:tools:vgs]].
-Used in [[:grants:7t:eeg]],  [[:grants:habit:eeg]],  [[:grants:spa:eeg]]
+Used in [[:grants:7t:eeg]],  [[:grants:habit:eeg]],  [[:grants:spa:eeg]].
+[[dollarreward]]'s psychopy implementation can also be run with parallel port (LPT) Status channel triggers enabled for EEG recording.
+===== Degree Visual Angle/Distance Measurements =====
+For local SSR [[tools:eyetracking#Configurations|measurements]] to visual angle, see [[tools:antisaccade:anti#visual_angle|Anti's visual angle section]] and [[https://www.sr-research.com/visual-angle-calculator/|SRR's visual angle calculator]].
+  * 2026-08-06 (FC,VD,WF): EEG DollarReward dots presented at <wrap tip> 8, 16, and 23 degrees from center</wrap>.
+  * 2026-07-30 (WF, PV): EEG chin rest measurements
+^ screen width            |''53'' cm / ''1920'' px|
+^ screen height           |''30'' cm / ''1080'' px|
+^ chinrest eye to bottom  |''61.5'' cm |
+^ chin rest eye to top    |''60'' cm|
+<code=R>
+rad2deg <- \(x) x * 180/pi           # 180deg is pi radians
+dot_pos <- c(7,108,214)              # relative to a 640px screen
+from_center_px <- 640/2 - dot_pos    # pixel position from center
+fc_cm <- from_center_px * 53/640     # pixel to screen distance on 53cm wide screen
+dotdegs <- atan(fc_cm/60)|>rad2deg() # angle from center to points w/ 60cm eye-to-screen
+#  23.374051 16.316696  8.327162
+</code>
+{{.:pasted:20260806-153510.png?300}}
+===== Saccade scoring =====
+Using EOG, see [[:tools:antisaccade#eog_data]]
+''Hera/Projects/7TBrainMech/scripts/eeg/eog_cal''
+<code make /Volumes/Hera/Projects/7TBrainMech/scripts/eeg/Makefile>
+eog_cal/eye_scored_mgs_eog_cleanvisit.csv: eog_cal/eye_scored_mgs_eog.csv
+        cd eog_cal && Rscript clean_eog_visit.R
+eog_cal/eye_scored_mgs_eog.csv: $(wildcard /Volumes/Hera/Raw/EEG/7TBrainMech/1*_2*/*_mgs*.bdf) $(wildcard /Volumes/Hera/Raw/EEG/7TBrainMech/1*_2*/*_MGS*.bdf)
+        cd eog_cal && ml score_eog.m
+</code>